Pictures: 900-mile trek across Florida

Joe Guthrie

Carlton Ward Jr. / AP

In this Jan. 18, 2015 photo provided by Carlton Ward Jr., wildlife biologist Joe Guthrie explores a freshwater spring at the headwaters of the Chassahowitzka River north of Tampa, Fla. On Thursday, March 19, 2015, members of the Florida Wildlife Corridor Expedition completed their 900-mile trek across Florida to raise awareness for habitat conservation and native wildlife. As Florida's human population has expanded, conservation lands have become increasingly isolated from one another, causing problems for numerous species of wildlife. (AP Photo/Carlton Ward Jr.,FloridaWildlifeCorridor.org)

In this Jan. 18, 2015 photo provided by Carlton Ward Jr., wildlife biologist Joe Guthrie explores a freshwater spring at the headwaters of the Chassahowitzka River north of Tampa, Fla. On Thursday, March 19, 2015, members of the Florida Wildlife Corridor Expedition completed their 900-mile trek across Florida to raise awareness for habitat conservation and native wildlife. As Florida's human population has expanded, conservation lands have become increasingly isolated from one another, causing problems for numerous species of wildlife. (AP Photo/Carlton Ward Jr.,FloridaWildlifeCorridor.org) (Carlton Ward Jr. / AP)

In this Feb. 22, 2015 photo provided by Carlton Ward Jr. American white pelicans stand near the Apalachicola River delta, Fla. On Thursday, March 19, 2015, members of the Florida Wildlife Corridor Expedition completed their 900-mile trek across Florida to raise awareness for habitat conservation and native wildlife. As Florida's human population has expanded, conservation lands have become increasingly isolated from one another, causing problems for numerous species of wildlife. (AP Photo/FloridaWildlifeCorridor.org, Carlton Ward Jr.)?

In this Feb. 22, 2015 photo provided by Carlton Ward Jr. American white pelicans stand near the Apalachicola River delta, Fla. On Thursday, March 19, 2015, members of the Florida Wildlife Corridor Expedition completed their 900-mile trek across Florida to raise awareness for habitat conservation and native wildlife. As Florida's human population has expanded, conservation lands have become increasingly isolated from one another, causing problems for numerous species of wildlife. (AP Photo/FloridaWildlifeCorridor.org, Carlton Ward Jr.)? (Carlton Ward Jr. / AP)